1. G.P. Ivanstov: Dokl. Akad. Nauk, SSSR, 1947, vol. 58, pp. 567–69.
2. G. Horvay and J.W. Cahn: Acta Metall., 1961, vol. 9, pp. 695–705.
3. M. Abramowitz: Handbook of Mathematical Functions, John Wiley, New York, NY, 1965.
4. R. Trivedi: Acta Metall., 1970, vol. 18, pp. 287–96.
5. R. Trivedi: Acta Metall., 1970, vol. 1, pp. 921–27.